// 乘法去异常
function accMul(arg1,arg2) {
    var m = 0,s1 = arg1.toString(),s2 = arg2.toString();
    try{ m+=s1.split(".")[1].length } catch(e){}
    try{ m+=s2.split(".")[1].length } catch(e){}
    return Number(s1.replace(".","")) * Number(s2.replace(".","")) / Math.pow(10,m)
}

// 加法去异常
function accAdd(arg1, arg2) {
    var r1, r2, m;
    try { r1 = arg1.toString().split(".")[1].length } catch (e) { r1 = 0 }
    try { r2 = arg2.toString().split(".")[1].length } catch (e) { r2 = 0 }
    m = Math.pow(10, Math.max(r1, r2))
    return (arg1 * m + arg2 * m) / m
}


// 减法去异常
function accSub(arg1, arg2) {
    var r1, r2, m, n;
    try { r1 = arg1.toString().split(".")[1].length } catch (e) { r1 = 0 }
    try { r2 = arg2.toString().split(".")[1].length } catch (e) { r2 = 0 }
    m = Math.pow(10, Math.max(r1, r2));
    n = (r1 >= r2) ? r1 : r2;
    return ((arg1 * m - arg2 * m) / m).toFixed(n);
}


// 除法去异常
function accDiv(arg1,arg2){
    var t1 = 0,t2 = 0,r1,r2;
    try{ t1 = arg1.toString().split(".")[1].length } catch(e){}
    try{ t2 = arg2.toString().split(".")[1].length } catch(e){}
    with(Math){
        r1 = Number(arg1.toString().replace(".",""))
        r2 = Number(arg2.toString().replace(".",""))
        return (r1/r2) * pow(10,t2-t1);
    }
}